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macro: add PA_ROUND_UP/PA_ROUND_DOWN macros

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This commit is contained in:
Lennart Poettering 2009-08-17 19:15:33 +02:00
parent 319d187972
commit fe3a21f6a5
1 changed files with 30 additions and 4 deletions
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34
src/pulsecore/macro.h
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@ -91,7 +91,8 @@ static inline size_t pa_page_align(size_t l) {
#ifdef __GNUC__ #ifdef __GNUC__
#define PA_MAX(a,b) \ #define PA_MAX(a,b) \
__extension__ ({ typeof(a) _a = (a); \ __extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \ typeof(b) _b = (b); \
_a > _b ? _a : _b; \ _a > _b ? _a : _b; \
}) })
@ -101,7 +102,8 @@ static inline size_t pa_page_align(size_t l) {
#ifdef __GNUC__ #ifdef __GNUC__
#define PA_MIN(a,b) \ #define PA_MIN(a,b) \
__extension__ ({ typeof(a) _a = (a); \ __extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \ typeof(b) _b = (b); \
_a < _b ? _a : _b; \ _a < _b ? _a : _b; \
}) })
@ -111,7 +113,8 @@ static inline size_t pa_page_align(size_t l) {
#ifdef __GNUC__ #ifdef __GNUC__
#define PA_CLAMP(x, low, high) \ #define PA_CLAMP(x, low, high) \
__extension__ ({ typeof(x) _x = (x); \ __extension__ ({ \
typeof(x) _x = (x); \
typeof(low) _low = (low); \ typeof(low) _low = (low); \
typeof(high) _high = (high); \ typeof(high) _high = (high); \
((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \ ((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
@ -122,7 +125,8 @@ static inline size_t pa_page_align(size_t l) {
#ifdef __GNUC__ #ifdef __GNUC__
#define PA_CLAMP_UNLIKELY(x, low, high) \ #define PA_CLAMP_UNLIKELY(x, low, high) \
__extension__ ({ typeof(x) _x = (x); \ __extension__ ({ \
typeof(x) _x = (x); \
typeof(low) _low = (low); \ typeof(low) _low = (low); \
typeof(high) _high = (high); \ typeof(high) _high = (high); \
(PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \ (PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \
@ -135,6 +139,28 @@ static inline size_t pa_page_align(size_t l) {
* make sense: we cannot know if it is more likely that the values is * make sense: we cannot know if it is more likely that the values is
* lower or greater than the boundaries.*/ * lower or greater than the boundaries.*/
#ifdef __GNUC__
#define PA_ROUND_UP(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
((_a + _b - 1) / _b) * _b; \
})
#else
#define PA_ROUND_UP(a, b) ((((a) + (b) - 1) / (b)) * (b))
#endif
#ifdef __GNUC__
#define PA_ROUND_DOWN(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
(_a / _b) * _b; \
})
#else
#define PA_ROUND_DOWN(a, b) (((a) / (b)) * (b))
#endif
/* This type is not intended to be used in exported APIs! Use classic "int" there! */ /* This type is not intended to be used in exported APIs! Use classic "int" there! */
#ifdef HAVE_STD_BOOL #ifdef HAVE_STD_BOOL
typedef _Bool pa_bool_t; typedef _Bool pa_bool_t;